254 lines
7.6 KiB
Python
254 lines
7.6 KiB
Python
# -*- coding: utf-8; mode: python -*-
|
|
# pylint: disable=W0141,C0113,C0103,C0325
|
|
u"""
|
|
cdomain
|
|
~~~~~~~
|
|
|
|
Replacement for the sphinx c-domain.
|
|
|
|
:copyright: Copyright (C) 2016 Markus Heiser
|
|
:license: GPL Version 2, June 1991 see Linux/COPYING for details.
|
|
|
|
List of customizations:
|
|
|
|
* Moved the *duplicate C object description* warnings for function
|
|
declarations in the nitpicky mode. See Sphinx documentation for
|
|
the config values for ``nitpick`` and ``nitpick_ignore``.
|
|
|
|
* Add option 'name' to the "c:function:" directive. With option 'name' the
|
|
ref-name of a function can be modified. E.g.::
|
|
|
|
.. c:function:: int ioctl( int fd, int request )
|
|
:name: VIDIOC_LOG_STATUS
|
|
|
|
The func-name (e.g. ioctl) remains in the output but the ref-name changed
|
|
from 'ioctl' to 'VIDIOC_LOG_STATUS'. The function is referenced by::
|
|
|
|
* :c:func:`VIDIOC_LOG_STATUS` or
|
|
* :any:`VIDIOC_LOG_STATUS` (``:any:`` needs sphinx 1.3)
|
|
|
|
* Handle signatures of function-like macros well. Don't try to deduce
|
|
arguments types of function-like macros.
|
|
|
|
"""
|
|
|
|
from docutils import nodes
|
|
from docutils.parsers.rst import directives
|
|
|
|
import sphinx
|
|
from sphinx import addnodes
|
|
from sphinx.domains.c import c_funcptr_sig_re, c_sig_re
|
|
from sphinx.domains.c import CObject as Base_CObject
|
|
from sphinx.domains.c import CDomain as Base_CDomain
|
|
from itertools import chain
|
|
import re
|
|
|
|
__version__ = '1.1'
|
|
|
|
# Get Sphinx version
|
|
major, minor, patch = sphinx.version_info[:3]
|
|
|
|
# Namespace to be prepended to the full name
|
|
namespace = None
|
|
|
|
#
|
|
# Handle trivial newer c domain tags that are part of Sphinx 3.1 c domain tags
|
|
# - Store the namespace if ".. c:namespace::" tag is found
|
|
#
|
|
RE_namespace = re.compile(r'^\s*..\s*c:namespace::\s*(\S+)\s*$')
|
|
|
|
def markup_namespace(match):
|
|
global namespace
|
|
|
|
namespace = match.group(1)
|
|
|
|
return ""
|
|
|
|
#
|
|
# Handle c:macro for function-style declaration
|
|
#
|
|
RE_macro = re.compile(r'^\s*..\s*c:macro::\s*(\S+)\s+(\S.*)\s*$')
|
|
def markup_macro(match):
|
|
return ".. c:function:: " + match.group(1) + ' ' + match.group(2)
|
|
|
|
#
|
|
# Handle newer c domain tags that are evaluated as .. c:type: for
|
|
# backward-compatibility with Sphinx < 3.0
|
|
#
|
|
RE_ctype = re.compile(r'^\s*..\s*c:(struct|union|enum|enumerator|alias)::\s*(.*)$')
|
|
|
|
def markup_ctype(match):
|
|
return ".. c:type:: " + match.group(2)
|
|
|
|
#
|
|
# Handle newer c domain tags that are evaluated as :c:type: for
|
|
# backward-compatibility with Sphinx < 3.0
|
|
#
|
|
RE_ctype_refs = re.compile(r':c:(var|struct|union|enum|enumerator)::`([^\`]+)`')
|
|
def markup_ctype_refs(match):
|
|
return ":c:type:`" + match.group(2) + '`'
|
|
|
|
#
|
|
# Simply convert :c:expr: and :c:texpr: into a literal block.
|
|
#
|
|
RE_expr = re.compile(r':c:(expr|texpr):`([^\`]+)`')
|
|
def markup_c_expr(match):
|
|
return '\ ``' + match.group(2) + '``\ '
|
|
|
|
#
|
|
# Parse Sphinx 3.x C markups, replacing them by backward-compatible ones
|
|
#
|
|
def c_markups(app, docname, source):
|
|
result = ""
|
|
markup_func = {
|
|
RE_namespace: markup_namespace,
|
|
RE_expr: markup_c_expr,
|
|
RE_macro: markup_macro,
|
|
RE_ctype: markup_ctype,
|
|
RE_ctype_refs: markup_ctype_refs,
|
|
}
|
|
|
|
lines = iter(source[0].splitlines(True))
|
|
for n in lines:
|
|
match_iterators = [regex.finditer(n) for regex in markup_func]
|
|
matches = sorted(chain(*match_iterators), key=lambda m: m.start())
|
|
for m in matches:
|
|
n = n[:m.start()] + markup_func[m.re](m) + n[m.end():]
|
|
|
|
result = result + n
|
|
|
|
source[0] = result
|
|
|
|
#
|
|
# Now implements support for the cdomain namespacing logic
|
|
#
|
|
|
|
def setup(app):
|
|
|
|
# Handle easy Sphinx 3.1+ simple new tags: :c:expr and .. c:namespace::
|
|
app.connect('source-read', c_markups)
|
|
|
|
if (major == 1 and minor < 8):
|
|
app.override_domain(CDomain)
|
|
else:
|
|
app.add_domain(CDomain, override=True)
|
|
|
|
return dict(
|
|
version = __version__,
|
|
parallel_read_safe = True,
|
|
parallel_write_safe = True
|
|
)
|
|
|
|
class CObject(Base_CObject):
|
|
|
|
"""
|
|
Description of a C language object.
|
|
"""
|
|
option_spec = {
|
|
"name" : directives.unchanged
|
|
}
|
|
|
|
def handle_func_like_macro(self, sig, signode):
|
|
u"""Handles signatures of function-like macros.
|
|
|
|
If the objtype is 'function' and the the signature ``sig`` is a
|
|
function-like macro, the name of the macro is returned. Otherwise
|
|
``False`` is returned. """
|
|
|
|
global namespace
|
|
|
|
if not self.objtype == 'function':
|
|
return False
|
|
|
|
m = c_funcptr_sig_re.match(sig)
|
|
if m is None:
|
|
m = c_sig_re.match(sig)
|
|
if m is None:
|
|
raise ValueError('no match')
|
|
|
|
rettype, fullname, arglist, _const = m.groups()
|
|
arglist = arglist.strip()
|
|
if rettype or not arglist:
|
|
return False
|
|
|
|
arglist = arglist.replace('`', '').replace('\\ ', '') # remove markup
|
|
arglist = [a.strip() for a in arglist.split(",")]
|
|
|
|
# has the first argument a type?
|
|
if len(arglist[0].split(" ")) > 1:
|
|
return False
|
|
|
|
# This is a function-like macro, its arguments are typeless!
|
|
signode += addnodes.desc_name(fullname, fullname)
|
|
paramlist = addnodes.desc_parameterlist()
|
|
signode += paramlist
|
|
|
|
for argname in arglist:
|
|
param = addnodes.desc_parameter('', '', noemph=True)
|
|
# separate by non-breaking space in the output
|
|
param += nodes.emphasis(argname, argname)
|
|
paramlist += param
|
|
|
|
if namespace:
|
|
fullname = namespace + "." + fullname
|
|
|
|
return fullname
|
|
|
|
def handle_signature(self, sig, signode):
|
|
"""Transform a C signature into RST nodes."""
|
|
|
|
global namespace
|
|
|
|
fullname = self.handle_func_like_macro(sig, signode)
|
|
if not fullname:
|
|
fullname = super(CObject, self).handle_signature(sig, signode)
|
|
|
|
if "name" in self.options:
|
|
if self.objtype == 'function':
|
|
fullname = self.options["name"]
|
|
else:
|
|
# FIXME: handle :name: value of other declaration types?
|
|
pass
|
|
else:
|
|
if namespace:
|
|
fullname = namespace + "." + fullname
|
|
|
|
return fullname
|
|
|
|
def add_target_and_index(self, name, sig, signode):
|
|
# for C API items we add a prefix since names are usually not qualified
|
|
# by a module name and so easily clash with e.g. section titles
|
|
targetname = 'c.' + name
|
|
if targetname not in self.state.document.ids:
|
|
signode['names'].append(targetname)
|
|
signode['ids'].append(targetname)
|
|
signode['first'] = (not self.names)
|
|
self.state.document.note_explicit_target(signode)
|
|
inv = self.env.domaindata['c']['objects']
|
|
if (name in inv and self.env.config.nitpicky):
|
|
if self.objtype == 'function':
|
|
if ('c:func', name) not in self.env.config.nitpick_ignore:
|
|
self.state_machine.reporter.warning(
|
|
'duplicate C object description of %s, ' % name +
|
|
'other instance in ' + self.env.doc2path(inv[name][0]),
|
|
line=self.lineno)
|
|
inv[name] = (self.env.docname, self.objtype)
|
|
|
|
indextext = self.get_index_text(name)
|
|
if indextext:
|
|
self.indexnode['entries'].append(
|
|
('single', indextext, targetname, '', None))
|
|
|
|
class CDomain(Base_CDomain):
|
|
|
|
"""C language domain."""
|
|
name = 'c'
|
|
label = 'C'
|
|
directives = {
|
|
'function': CObject,
|
|
'member': CObject,
|
|
'macro': CObject,
|
|
'type': CObject,
|
|
'var': CObject,
|
|
}
|